Yong Kou¹, Ke Jin¹, Xiaojing Zheng^1,2

CMC-Computers, Materials & Continua, Vol.22, No.2, pp. 129-146, 2011, DOI:10.3970/cmc.2011.022.129

Abstract Magnetic shielding needs to be employed to ensure proper operation of some electronic equipment which are sensitive to external magnetic interference, such as cryogenic valves located inside the ITER feeder cubicles. This paper is concerned with the shielding efficiency of the magnetic shielding enclosures. A 3-D theoretical model for Fe-Ni alloy magnetic shielding enclosures based on finite element method (FEM) is obtained with the nonlinear law of magnetization. The influence of shielding materials, enclosure configurations, single or multi- layer designs, and apertures on the shielding efficiency is investigated. It is shown that the proposed model More >

Satya Allaparthi, Robert D. Blute, Jr.

Canadian Journal of Urology, Vol.17, No.2, pp. 5109-5113, 2010

Abstract Seminal vesicle cysts combined with ipsilateral renal agenesis, ectopic ureter and giant right ampullary cyst of vas deferens represent a rare urological anomaly, Zinner's syndrome. In symptomatic patients, seminal vesiculectomy along with en bloc excision of the ipsilateral ampullary cyst, ectopic ureter and dysplastic renal tissue is the preferred treatment option. We report robotic assisted removal of a large seminal vesicle cyst with ipsilateral renal agenesis, ectopic ureter and a giant right ampullary cyst of vas deferens in a 34-year-old male. We reviewed the literature about this rare urological anomaly and novel usage of da More >

Daniel P. Casella, Marc C. Smaldone, Timothy D. Averch

Canadian Journal of Urology, Vol.17, No.3, pp. 5151-5161, 2010

Abstract Natural orifi ce transluminal endoscopic surgery (NOTES) has attracted considerable recent attention for its potential to allow traditional abdominal procedures to be performed without a transabdominal incision. With considerable experience in the development and application of minimally invasive techniques, urologists have played a signifi cant role in early experimental NOTES efforts and have contributed to early investigations in human subjects accordingly. However, adoption of these techniques has been limited due to cumbersome endoscopic equipment and concerns regarding peritonitis from failed viscerotomy closure. Experience with use of NOTES in human subjects is limited, and studies comparing More >

George Rodrigues^1,2, Slav Yartsev^1,3, Glenn Bauman^1,3

Canadian Journal of Urology, Vol.17, No.6, pp. 5453-5458, 2010

Abstract Introduction: Helical tomotherapy (HT) is an innovative approach to the delivery of intensity-modulated radiation therapy which combines the imaging elements of helical computed tomography (CT) with megavoltage linear accelerator treatment. The purpose of this report is to describe our experience with the clinical implementation of HT for genitourinary malignancies.
Materials and methods: All patients treated with a primary genitourinary malignancy were included in this study cohort. Descriptive statistics for various demographic and treatment-related parameters such as patient age, primary site of disease, site of radiotherapy, goal of treatment, dose/fractionation, immobilization and clinical trial enrolment were calculated.
Results: A… More >

Khalil Khanafer^a, Kambiz Vafai^b,*

Frontiers in Heat and Mass Transfer, Vol.1, No.2, pp. 1-9, 2010, DOI:10.5098/hmt.v1.2.3004

Abstract A study was conducted to demonstrate the applications of microcantilevers in biomedical and thermo/fluid fields. The deflection of the microcantilevers due to biomaterial and turbulence effects was highlighted in this work. The novel patented microcantilever assemblies that were presented in this study can increase the signal and decrease the unfavorable deflection due to flow disturbances. This work paves the road for researchers in the area microcantilever based biosensors to design efficient microsensor systems that exhibit minimal errors in the measurements. Fluid-structure interaction was also utilized to investigate some aspects of the fluid flow and heat More >

Zihua Zhao¹, Yu Zhou, Zheng Zhang, Qunpeng Zhong

Structural Durability & Health Monitoring, Vol.6, No.2, pp. 101-112, 2010, DOI:10.3970/sdhm.2010.006.101

Abstract Annex H"Safety assessment method for straight pressure pipeline with local thinning area" of "Safety assessment for in-service pressure vessels containing defects"(GB/T 19426-2004) is briefly introduced. The maximum allowable hanging (unsupported) length of straight pressure pipeline with a local thinning area (LTA) is then determined by using this assessment method. This is the first time that the assessment method has been applied to the long-distance oil pipeline. As a typical case, we have analyzed a length of straight pressure pipeline with LTA and gave the relationship of maximum allowable unsupported length, operating pressure and the depth More >

Xue-Ren Wu¹

Structural Durability & Health Monitoring, Vol.6, No.2, pp. 77-88, 2010, DOI:10.3970/sdhm.2010.006.077

Abstract A review of the state-of-the-art is presented on the weight function method for fracture-mechanics-based structural integrity assessment with regard to crack-like defects. The weight function method provides a powerful tool for the determination of key parameters, such as stress intensity factors and crack opening displacements for cracked structural components. For two dimensional (2D) crack problems, weight functions were obtained in closed-form for both centre-and edge-crack configurations. For three dimensional(3D) cases, a combination of the closed-form 2D weight functions and the slice synthesis technique makes it possible for rapid determination of stress intensity factor at any More >

Z Damian-Noriega¹, PA Lomeli-Mejia², SA Villanueva-Pruneda¹, R Pérez-Moreno¹, JPA Puerta-Huerta¹, E Montes-Estrada¹, GD Alvarez-Miranda¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.14, No.1, pp. 29-36, 2010, DOI:10.3970/icces.2010.014.029

Abstract The sizing of the component parts of a mechanical assembly must first assure its assembly and functionality and then the replacement (interchangeability) of used parts with new parts. For diametral fits (gaps and interferences) the ISO system of limits and fits is used, but for axial gaps the functional dimensioning method is applied to ensure maximum and minimum functional values. For each axial gap, the axial dimensions of the involved parts must be identified. Later, a minimal chain of dimensions is established, defined as the addition and subtraction of vectors parallel to the axis of More >

A. Arefmanesh¹, M. Najafi², M. Nikfar³

CMES-Computer Modeling in Engineering & Sciences, Vol.69, No.2, pp. 91-118, 2010, DOI:10.3970/cmes.2010.069.091

Abstract Procuring a numerical solution through an application of the meshless local Petrov-Galerkin method (MLPG) on the fluid flow and mixed convection in a complex geometry cavity filled with a nanofluid is the scope of the present study. The cavity considered is a square enclosure having a lower temperature sliding lid at the top, a differentially higher temperature wavy wall at the bottom, and two thermally insulated walls on the sides. The nanofluid medium used is a water-based nanofluid, Al₂O₃-water with various volume fractions of its solid. To carry out the numerical simulations, the developed governing equations… More >

Sunilkumar N¹, D Roy^1,2

CMES-Computer Modeling in Engineering & Sciences, Vol.66, No.3, pp. 249-284, 2010, DOI:10.3970/cmes.2010.066.249

Abstract We propose a family of 3D versions of a smooth finite element method (Sunilkumar and Roy 2010), wherein the globally smooth shape functions are derivable through the condition of polynomial reproduction with the tetrahedral B-splines (DMS-splines) or tensor-product forms of triangular B-splines and 1D NURBS bases acting as the kernel functions. While the domain decomposition is accomplished through tetrahedral or triangular prism elements, an additional requirement here is an appropriate generation of knotclouds around the element vertices or corners. The possibility of sensitive dependence of numerical solutions to the placements of knotclouds is largely arrested… More >